An elevator cable breaks when a 925-kg elevator is 28.5 m above the top of a huge spring Ak = 8.00 * 104 NmB at the bottom of the shaft. Calculate (a) the work done by gravity on the elevator before it hits the spring; (b) the speed of the elevator just before striking the spring; (c) the amount the spring compresses (note that here work is done by both the spring and gravity).
Answers: 1
Another question on Physics
Physics, 21.06.2019 21:30
Aparticle with mass 1.81×10−3 kg and a charge of 1.22×10−8 c has, at a given instant, a velocity v⃗ =(3.00×104m/s)j^. what are the magnitude and direction of the particle’s acceleration produced by a uniform magnetic field b⃗ =(1.63t)i^+(0.980t)j^?
Answers: 2
Physics, 22.06.2019 04:10
Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward
Answers: 3
Physics, 22.06.2019 23:30
An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.
Answers: 2
You know the right answer?
An elevator cable breaks when a 925-kg elevator is 28.5 m above the top of a huge spring Ak = 8.00 *...
Questions
History, 23.09.2019 06:00
Mathematics, 23.09.2019 06:00
Mathematics, 23.09.2019 06:10
History, 23.09.2019 06:10
Mathematics, 23.09.2019 06:10
Mathematics, 23.09.2019 06:10
Biology, 23.09.2019 06:10
Biology, 23.09.2019 06:10
Mathematics, 23.09.2019 06:10
Mathematics, 23.09.2019 06:10
History, 23.09.2019 06:10
